The Weather system in Just Us is very important and dangerous, it will affect the entire world and it's actors, for example, if players are outside while raining (without cover) you will get increased wetness, the same applies to things like campfires, which if unprotected, will die out.
If a player gets wet your body temperature will decrease, your kcal (food) consumption will increase to keep body temperature up, among other things.
I decided to release a video demonstrating the visual part of the weather system, it's still not 100%, which means that I'm open to feedback and suggestions on improvements and changes.